/Engine/Source/Editor/UnrealEd/Public/Layers/LayersSubsystem.h
Removes the actors from the specified layer.
true if at least one actor was removed from the layer. false is returned if all the actors already belonged to the layer.
virtual bool RemoveActorsFromLayer ( const [TArray](API\Runtime\Core\Containers\TArray)< [TWeakObjectPtr](API\Runtime\Core\UObject\TWeakObjectPtr)< [AActor](API\Runtime\Engine\GameFramework\AActor) > > & Actors, const [FName](API\Runtime\Core\UObject\FName) & LayerName, const bool bUpdateStats )